Certificate for #20046 ⟨a, b | aab=a, bbbb=bba

Completion settings:

[1] aab=a

Axiom: aab=a.

Referenced by [3], [5], [6], [7].

[2] bbbb=bba

Axiom: bbbb=bba.

Defines rule #4.

Referenced by [3], [4].

[3] abbb=aba

Overlap of [1] aab=a with [2] bbbb=bba:

aa b bbbb

Critical pair: aabba=abbb.

Reduce LHS:

[1](aab)ba
aba

Flip LHS and RHS.

Referenced by [5], [7].

[4] bbab=bbba

Overlap of [2] bbbb=bba with [2] bbbb=bba:

b bbb bbbb

Critical pair: bbba=bbab.

Flip LHS and RHS.

Referenced by [8].

[5] abb=aa

Overlap of [1] aab=a with [3] abbb=aba:

a ab abbb

Critical pair: aaba=abb.

Reduce LHS:

[1](aab)a
aa

Flip LHS and RHS.

Referenced by [6], [7].

[6] ab=aaa

Overlap of [1] aab=a with [5] abb=aa:

a ab abb

Critical pair: aaa=ab.

Flip LHS and RHS.

Defines rule #2.

Referenced by [7], [8].

[7] aaaa=a

Overlap of [3] abbb=aba with [5] abb=aa:

abbb abb

Critical pair: aab=aba.

Reduce LHS:

[1](aab)
a

Reduce RHS:

[6](ab)a
aaaa

Flip LHS and RHS.

Defines rule #1.

[8] bbba=bbaaa

Simplify [4] bbab=bbba.

Reduce LHS:

[6]bb(ab)
bbaaa

Flip LHS and RHS.

Defines rule #3.